Lock



Oct. 7 1924.

S. SEGAL LOCK Filed Jan. 29;

Patented Oct. 7, 1924.

UNITED STATES PATENT @FFHQE...

SAMUEL SEGAL, on NEW YORK, N. Y., essielxron To sneer. METAL rnonuors cora- PANY, rim, on NEW YORK, Y., A CORPORATION or DELAWARE.

LOCK.

Application filed January 29, 1920. I Serial No. 354,765.

To all whom it may concern:

B it known that I, SAMUEL SEGAL, a citizen of the United States, and a resident of New York, in the county of New Yorkand State of New York, have invented certain new and useful Improvements in Locks, of which the following is a specification.

My invention relates to looks and more particularly to looks the mechanism of which is enclosed in a casing which is secured to the inner side or face of a door.

Th object of the invention is the production of a lock of the general type indicated above which shall be of simple construction and positive in operation, which shall be adapted to be applied to either a swingingor a sliding door and which shall be so constructed as to effectively prevent an unauthorized entrance through the door by jimmying the lock or by other means in an endeavor to displace or break the lock. v

Other and further objects of the inventionwill appear from the accompanying description, the invention consisting in the novel parts and combinations of parts hereinafter more particularly described and then specified in the claims:

In the accompanying drawings illustrating a practical embodiment of the invention Fig. 1 is a front elevation of my improved look as applied to the inner face of a door.

Fig. 2 is a horizontal section on the line 2-2 of Fig. 1.

Fig. 3 is a rear. elevation of the lock with its cover plate removed.

Fig. 4 is a perspective view of the rear of the lock casing.

Fig. 5 is a perspective view of my improved locking bolts. I

Referring in detail to the several figures of the drawing: f

1 indicates the inner face of either a sliding orswinging door and 2 the door frame. 3 indicates a casing containing the locking mechanism which casing is fastened to the door 1 by suitable screws 4: with the outer end 5 of said casing having an outer curved surface, extending over the space or slot between the door and door frame as shown in Figs. land 2. The arcuate end 5 of the casing is provided with horizontal slots 6 extending transversely therethrough said slots being adapted to receive the perforated ears 7 of a keeper 8 which is fastened to the door frame by screws 9. The casing 3 is provided with a post 10 and lugs 11 on which a removable cover plate 12 rests, said cover plate being adapted to be fastened to said posts by a screw 13.

14:, 15 indicates my improved locking bolts 7 which have reduced body portions as shown, are provided with thickened inner or operating ends 1 1 15 respectively of slightly less width than the width of the casing and with outer thickened and hooked locking ends or fingers 1 1 15" which are segmental in general configuration and'preferably rectangular in cross-section and which follow the contour of the outer end 5 of the casing. Thesaid hooked ends or fingers of the locking bolts are adapted to move towards and away from each other within the outer end 5 of the casing, to ex tend across the horizontal slots 6 and to interlock with the erforated ears 7 of the I keeper as shown in ig. 3. v I p The cover plate 12 is provided with a hole .16 adapted to receive an annular lug or pin .17 with which the locking bolt 15 is provided, said locking bolt beingpro-vided with a depression or hole 18 for-receiving a lug or pin 19 on the locking bolt 14. The locking bolt 14: is also provided with a depression or hole 20 adapted to receive an annular shoulder 21 on the front wall of the casing.

The locking bolts are crossed one over the other and the parts just described interfit V with eachother to give the effect of a pivotal mounting one on the other of the bolts in the casing, the bolts atthe same time being held to the casing in this position without the necessity of providing an actual separate pivot or. other additionalpivoting .or holding means. This arrangement makes for simplicity of construction and ease of operation, the. construction of the bolts as shown and described being such that even when crossed one over the other, their thickened operating ends and hooked ends lie in the same vertical plane 22 indicates a latch knob which is mount- 7 which is embedded in the door 1 and which has the usual operating spindle 25 extending inwardly therefrom through the cover plate 12 and on the end of which within the casing a cam 26 is fastened similar in configuration to the cam 23. Said cams 23 and 26 always engage the thickened inner ends 14' 15 of the locking bolts due to the action of a spring 2* connecting said bolts together.

As is obvious, the locking bolts may be actuated by turning the latch knob 22 within the door or by turning a key inserted in the tumbler barrel 24; from without the door which efiects a turning of the cam 23 or cam 26, as the case may be, to spread the thickened inner ends 14: 15 of the locking bolts apart against the action of the spdng 27, and the consequent movement away from each other of the ends of the hooked look ing fingers l4 15 of the locking bolts within the end 5 of the casing to release said hooked locking fingers from their engagement with the perforated ears 7 of the keeper. When in open position, the hooked locking fingers 14" 15 as well as the inner ends 14 15 of the locking bolts are spread apart and the cam 23 or the cam 26, which is then in a position at right angles to the position shown in Fig. 8, holds them spread apart until again turned whereupon the action of the spring immediately draws them together into locked position whereby the ends are brought into juxtaposition.

My particular lock is desirable for the reason that the interiorof the casing thereof is free from dividing walls or other impediments so that the casing may be easily manufactured and access may be easily had .to the mechanism within the casing for cleaning or repair purposes. Furthermore, the configuration of the locking ends of fingers of the locking bolts makes for an ex tremely efiicient type of lock for the reason that said locking fingers, when engaging the perforated ears of the keeper, act as hooks and are not easily displaced and the meeting ends of the locking fingers when in locked position are protected and concealed by that portion of the .end of the casing intermediate the horizontal slots 6, so that unauthorized access to said ends in an endeavor to force the locking bolts into unlocked position is extremely difficult. Furthermore the employment of a plurality of bolts of this construction which are movable independently of each other is desirable for the reason that an entrance through the door cannot-begained by merely forcing one of the locking fingers from its engagement with an ear of the keeper as that in no wise afiects the locking position ofthe other locking finger which must also be forced out of its locking position before the door may be opened.

and provided with horizontal slots therein adapted to receive said keeper and a plurality of locking bolts mounted in said casng and provided with segmental-shaped hooked ends adapted to move towards and away from each other within said end wall, to extend across the slots of the casing and to interlock with said keeper.

,2. In a door lock, the combination with a keeper provided with perforated ears, of a casing extending beyond the edge of the door and having horizontal slots in an end wall thereof adapted to receive the ears of the keeper and a plurality of locking bolts crossed one over the other and mounted in said casing and provided with hooked ends adapted to extend across the slots of the casing and to interlock with the perforated ears of said keeper, the ends of said looking bolts being concealed by that portion of the casing intermediate said slots when in locked position.

3. In a door lock, the combination with a keeper, of a casing extending beyond the edge of the door and having slots therein adapted to receive the keeper, a plurality of locking bolts mounted in said casing and having segmental-shaped hooked ends adapted to extend across the slots of the easing and to interlock with said keeper and a spring joining said locking bolts and acting to retain said hooked ends in interlocked position, the hooked ends of said locking bolts being brought into juxtaposition and being concealed by that portion of the casing intermediate said slots when in interlocked position.

4. Ina door lock, the combination with a keeper provided with perforated ears, of a casing having a portion thereof extending beyond the edge of the door and having horizontal slots therein adapted to receive the perforated ears of the keeper, a plurality of locking bolts crossed one over the other and pivotally mounted in said casing and having hooked endsadapted to extend'across the slots of said casing and to interlock with the perforated ears of :thekeeper, a spring joining saidlocking bolts and acting to retain said hooked ends in interlocked position, the hooked ends of said locking bolts being concealed by that portion of the casing intermediate said slots when in interlocked position and means for withdrawing said locking bolts from interlocked position.

5. ln a'lock, the combination of a keeper, a casing having a hole in one wall thereof and a shoulder in the opposite wall and a interlock with the keeper, said lockingbolts being also provided with pins and depres- New York and State of New York, this sions adapted to interfit with each other and 27th day of January A. D. 1920. with the hole and shoulder in the Walls of the casing whereby said locking bolts are SEGAL. 5 pivotally held together by the walls of the Witnesses:

easing. F. B. TOWNSEND,

Signed at New York; in the county of W. R. WARNER; 

